About the Execution of ITS-Tools for Champagne-PT-H06T2O
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 0.000 | 8596.00 | 0.00 | 0.00 | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 | normal |
Execution Chart
Sorry, for this execution, no execution chart could be reported.
Trace from the execution
Formatting '/data/fkordon/mcc2025-input.r254-tall-174931339200069.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2025-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-5832
Executing tool itstools
Input is Champagne-PT-H06T2O, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r254-tall-174931339200069
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 576K
-rw-r--r-- 1 mcc users 7.0K Jun 6 08:55 CTLCardinality.txt
-rw-r--r-- 1 mcc users 79K Jun 6 08:55 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.4K Jun 6 08:55 CTLFireability.txt
-rw-r--r-- 1 mcc users 48K Jun 6 08:55 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jun 6 11:38 LTLCardinality.txt
-rw-r--r-- 1 mcc users 30K Jun 6 11:38 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Jun 6 11:38 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Jun 6 11:38 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 Jun 5 20:08 NewModel
-rw-r--r-- 1 mcc users 11K Jun 6 08:56 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 115K Jun 6 08:56 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.0K Jun 6 08:56 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 66K Jun 6 08:56 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Jun 6 11:38 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Jun 6 11:38 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Jun 5 20:08 equiv_col
-rw-r--r-- 1 mcc users 7 Jun 5 20:08 instance
-rw-r--r-- 1 mcc users 6 Jun 5 20:08 iscolored
-rw-r--r-- 1 mcc users 137K Jun 5 20:08 model.pnml
--------------------
content from stdout:
=== Data for post analysis generated by BenchKit (invocation template)
The expected result is a vector of positive values
NUM_VECTOR
echo here is the order used to build the result vector(from xml file)
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-00
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-01
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-02
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-03
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-04
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-05
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-06
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-07
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-08
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-09
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-10
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-11
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-12
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-13
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-14
FORMULA_NAME Champagne-PT-H06T2O-UpperBounds-15
=== Now, execution of the tool begins
BK_START 1749321390179
Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Champagne-PT-H06T2O
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2025-06-07 18:36:31] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2025-06-07 18:36:31] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2025-06-07 18:36:31] [INFO ] Load time of PNML (sax parser for PT used): 88 ms
[2025-06-07 18:36:31] [INFO ] Transformed 759 places.
[2025-06-07 18:36:31] [INFO ] Transformed 928 transitions.
[2025-06-07 18:36:31] [INFO ] Found NUPN structural information;
[2025-06-07 18:36:31] [INFO ] Parsed PT model containing 759 places and 928 transitions and 2145 arcs in 180 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 7 ms.
Current structural bounds on expressions (Initiallly, because the net is safe) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
// Phase 1: matrix 928 rows 759 cols
[2025-06-07 18:36:31] [INFO ] Computed 20 invariants in 17 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
RANDOM walk for 10000 steps (19 resets) in 67 ms. (147 steps per ms)
FORMULA Champagne-PT-H06T2O-UpperBounds-15 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-13 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-12 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-11 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-10 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-09 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-08 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-07 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-05 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-04 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-03 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-02 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-01 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Champagne-PT-H06T2O-UpperBounds-00 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 10001 steps (2 resets) in 13 ms. (714 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0] Max Struct:[1]
[2025-06-07 18:36:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-06-07 18:36:32] [INFO ] [Real]Absence check using 20 positive place invariants in 24 ms returned sat
[2025-06-07 18:36:32] [INFO ] [Real]Absence check using state equation in 239 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 18:36:32] [INFO ] Deduced a trap composed of 75 places in 128 ms of which 20 ms to minimize.
[2025-06-07 18:36:32] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-06-07 18:36:32] [INFO ] [Nat]Absence check using 20 positive place invariants in 21 ms returned sat
[2025-06-07 18:36:33] [INFO ] [Nat]Absence check using state equation in 239 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 18:36:33] [INFO ] Deduced a trap composed of 75 places in 82 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 18:36:33] [INFO ] Deduced a trap composed of 75 places in 67 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 18:36:33] [INFO ] Deduced a trap composed of 75 places in 56 ms of which 2 ms to minimize.
[2025-06-07 18:36:33] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 350 ms
[2025-06-07 18:36:33] [INFO ] Computed and/alt/rep : 926/2096/926 causal constraints (skipped 1 transitions) in 49 ms.
[2025-06-07 18:36:37] [INFO ] Added : 420 causal constraints over 84 iterations in 4258 ms. Result :unknown
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[1]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[1]
Support contains 1 out of 759 places. Attempting structural reductions.
Drop transitions (Removing consumers from one bounded place p703) removed 1 transitions
Starting structural reductions in REACHABILITY mode, iteration 0 : 759/759 places, 927/927 transitions.
Graph (trivial) has 791 edges and 759 vertex of which 394 / 759 are part of one of the 20 SCC in 4 ms
Free SCC test removed 374 places
Drop transitions (Empty/Sink Transition effects.) removed 428 transitions
Reduce isomorphic transitions removed 428 transitions.
Reduce places removed 1 places and 1 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 189 transitions
Trivial Post-agglo rules discarded 189 transitions
Performed 189 trivial Post agglomeration. Transition count delta: 189
Iterating post reduction 0 with 190 rules applied. Total rules applied 191 place count 384 transition count 309
Reduce places removed 189 places and 0 transitions.
Ensure Unique test removed 18 transitions
Reduce isomorphic transitions removed 18 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 18 transitions
Trivial Post-agglo rules discarded 18 transitions
Performed 18 trivial Post agglomeration. Transition count delta: 18
Iterating post reduction 1 with 225 rules applied. Total rules applied 416 place count 195 transition count 273
Reduce places removed 18 places and 0 transitions.
Iterating post reduction 2 with 18 rules applied. Total rules applied 434 place count 177 transition count 273
Discarding 67 places :
Symmetric choice reduction at 3 with 67 rule applications. Total rules 501 place count 110 transition count 206
Iterating global reduction 3 with 67 rules applied. Total rules applied 568 place count 110 transition count 206
Performed 20 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 20 Pre rules applied. Total rules applied 568 place count 110 transition count 186
Deduced a syphon composed of 20 places in 7 ms
Reduce places removed 20 places and 0 transitions.
Iterating global reduction 3 with 40 rules applied. Total rules applied 608 place count 90 transition count 186
Discarding 14 places :
Symmetric choice reduction at 3 with 14 rule applications. Total rules 622 place count 76 transition count 130
Iterating global reduction 3 with 14 rules applied. Total rules applied 636 place count 76 transition count 130
Ensure Unique test removed 14 transitions
Reduce isomorphic transitions removed 14 transitions.
Iterating post reduction 3 with 14 rules applied. Total rules applied 650 place count 76 transition count 116
Performed 18 Post agglomeration using F-continuation condition.Transition count delta: 18
Deduced a syphon composed of 18 places in 0 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 4 with 36 rules applied. Total rules applied 686 place count 58 transition count 98
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: -11
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 4 with 4 rules applied. Total rules applied 690 place count 56 transition count 109
Drop transitions (Empty/Sink Transition effects.) removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 4 with 4 rules applied. Total rules applied 694 place count 56 transition count 105
Drop transitions (Redundant composition of simpler transitions.) removed 8 transitions
Redundant transition composition rules discarded 8 transitions
Iterating global reduction 5 with 8 rules applied. Total rules applied 702 place count 56 transition count 97
Free-agglomeration rule applied 31 times.
Iterating global reduction 5 with 31 rules applied. Total rules applied 733 place count 56 transition count 66
Reduce places removed 31 places and 0 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 55 transitions
Reduce isomorphic transitions removed 55 transitions.
Iterating post reduction 5 with 86 rules applied. Total rules applied 819 place count 25 transition count 11
Ensure Unique test removed 15 places
Iterating post reduction 6 with 15 rules applied. Total rules applied 834 place count 10 transition count 11
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 7 with 1 rules applied. Total rules applied 835 place count 10 transition count 10
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 7 with 1 rules applied. Total rules applied 836 place count 9 transition count 9
Reduce places removed 3 places and 0 transitions.
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 7 with 7 rules applied. Total rules applied 843 place count 6 transition count 5
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 3 places and 0 transitions.
Iterating global reduction 8 with 5 rules applied. Total rules applied 848 place count 3 transition count 3
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 8 with 1 rules applied. Total rules applied 849 place count 3 transition count 2
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 9 with 1 Pre rules applied. Total rules applied 849 place count 3 transition count 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 9 with 2 rules applied. Total rules applied 851 place count 2 transition count 1
Applied a total of 851 rules in 91 ms. Remains 2 /759 variables (removed 757) and now considering 1/927 (removed 926) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 98 ms. Remains : 2/759 places, 1/927 transitions.
// Phase 1: matrix 1 rows 2 cols
[2025-06-07 18:36:38] [INFO ] Computed 1 invariants in 3 ms
Current structural bounds on expressions (after invariants) : Max Seen:[1] Max Struct:[1]
FORMULA Champagne-PT-H06T2O-UpperBounds-14 1 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 1000000 steps (500000 resets) in 350 ms. (2849 steps per ms)
BEST_FIRST walk for 0 steps (0 resets) in 0 ms. (0 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[] Max Struct:[]
RANDOM walk for 0 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/0 properties
Finished probabilistic random walk after 0 steps, run visited all 0 properties in 0 ms. (steps per millisecond=0 )
[2025-06-07 18:36:38] [INFO ] Flatten gal took : 126 ms
[2025-06-07 18:36:38] [INFO ] Flatten gal took : 1 ms
[2025-06-07 18:36:38] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4308805021162429047.gal : 2 ms
[2025-06-07 18:36:38] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8540966772516083247.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality4308805021162429047.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8540966772516083247.prop' '--nowitness' '--gen-order' 'FOLLOW'
ITS runner timed out or was interrupted.
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality8540966772516083247.prop.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,2,0.019894,3696,2,4,5,11,6,0,7,6,0
Total reachable state count : 2
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[] Max Struct:[]
All properties solved without resorting to model-checking.
Total runtime 7363 ms.
BK_STOP 1749321398775
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ UpperBounds = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
Sequence of Actions to be Executed by the VM
This is useful if one wants to reexecute the tool in the VM from the submitted image disk.
set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="Champagne-PT-H06T2O"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"
# this is specific to your benchmark or test
export BIN_DIR="$HOME/BenchKit/bin"
# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi
# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5832"
echo " Executing tool itstools"
echo " Input is Champagne-PT-H06T2O, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r254-tall-174931339200069"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/Champagne-PT-H06T2O.tgz
mv Champagne-PT-H06T2O execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "StateSpace" ]; then
rm -f GenericPropertiesVerdict.xml
fi
pwd
ls -lh
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "StateSpace" ] ; then
echo "The expected result is a vector of booleans"
echo BOOL_VECTOR
else
echo "no data necessary for post analysis"
fi
echo
if [ -f "UpperBounds.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
fi
echo
echo "=== Now, execution of the tool begins"
echo
echo -n "BK_START "
date -u +%s%3N
echo
timeout -s 9 $BK_TIME_CONFINEMENT bash -c "/home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n \"BK_STOP \" ; date -u +%s%3N"
if [ $? -eq 137 ] ; then
echo
echo "BK_TIME_CONFINEMENT_REACHED"
fi
echo
echo "--------------------"
echo "content from stderr:"
echo
cat STDERR ;